The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Like one hell of a PROMOTION.
Breaking Bad Season 2, Episode 5

wouldn't that
be a PROMOTION?
The Big Bang Theory Season 12, Episode 13

Hey. You bucking
for a PROMOTION?
Breaking Bad Season 2, Episode 10

I bet Jennifer gets a PROMOTION
out of this, which is so unfair,
The Big Bang Theory Season 10, Episode 19

I awarded myself
a battlefield PROMOTION.
The Big Bang Theory Season 5, Episode 1